Coach-latch



(ModeL) F. W. TIESING.

Coach Latch, v

'No. 243,006." Patented June 14,1881.

an 2 77. Z21? WW7 2:1; .71: 1 a 6 r UNITED STATES PATENT OFFICE.

FRANK W. TIESING, OF NEW HAVEN, CONNECTICUT.

COACH- LATCH.

SPECIFICATION forming part of Letters Patent No. 243,006, dated June 14., 1881.

Application filed April 4, 1881. (Model) To all whom it may concern Be it known that I, FRANK W. TIESING, of New Haven, in the county of New Haven and State of Connecticut, have invented a new Improvementin Coach-Latches; and I do hereby declare the following, when taken in connection with the accompanying drawings and the letters of reference marked thereon, to be afull, clear, and exact description of the same, and which said drawings constitute part of this specification, and represent, in

Figure 1, a plan view with covering-plate removed; Fig. 2, a previous construction on which this invention is an improvement.

This invention relates to an improvement in that class of latches designed for coach or carriage doors. These are of two classes, one commonl y called spring-latches-thatis, latches which are operated by a handle upon the outside and a corresponding handle upon the inside, the spindle extending through the door and follower for the attachment of the outside and inside handles. The other class is that called le\ 'er-latchesthat is, latches provided witha follower which is operated by a handle on the outside of the door, or by a lever which extends upward within the door itself above the sill on which the sash rests, with a handle on the lever at that point as a means for operating the latch.

As heretofore constructed the spring or knob the bolt to force it outward, and such a spring must be arranged between the lever and follower. Then an independent spring, E, is arranged to act upon the lever and hold it forward against a stationary stop, a, on the case, while a projection, 12, bears against an opposite point of the lever. This second spring is necessary in order to prevent the rattling of the lever, as the lever has no positive connection with the latch-bolt. When the outside knob is turned it throws the bolt back, leaving the lever held by its spring against the stationary stud a; but when the lever is drawn back upon the inside, then it acts upon a projection, b, and draws the bolt.

To shorten this mechanism and brin git within the dimensions of the spring-latch, so that it may be used as the spring-latch, I arrange the parts as seen in Fig. 1, in which F is the latch-bolt; G, the follower, actuated from the outside by a spindle through the follower in the usual manner, the follower working against a projection, 01, downward from the bolt. H is the lever, hung below and near the follower, as ate. Extending upward, it turns forward and downward between two projections, f g, on the bolt. An extension, I, is made from the lever upward for the attachment of the handle.

In rear of the lever, and so as to bear forward against it, is the inainspring L. This spring, because of p the positive connection between the lever and the bolt, serves also as a spring for the bolt, and holds all the parts forward against a stationary stop, 1 or a, and prevents the possibility of rattling, thereby dispensing with theholding-springE ofthe previous construction and permitting a shortening of the latch to the usual size of springlatches.

The connection between the bolt and lever may be made by-a single stud on the bolt'with a notch or fork on the lever, it only being essential that the connection shall be positive, and so that the lever and bolt will be moved together, in order that the single mainspring will operate to hold both the lever and the bolt.

I claim- The combination of the bolt F and follower G with the handle-lever H, hung in the case, with an arm extending therefrom to a notch or projection on the bolt, so as to engage the bolt in both its outward and inward movements, and a single spring in rear of the said lever operating to force and hold both the bolt and lever in the latched condition, substantially as described.

FRANK TIESING.

Witnesses J. H. SHUMWAY, L. D. ROGERS. 

